This program instantly coverts between the major temperature units Fahrenheit, Celsius, and Kelvin.

Fahrenheit:
Celsius:
Kelvin:

The conversion equations are listed below.

Let F, C, and K be degrees Fahrenheit, Celcius, and
Kelvin respectively.
K = C + 273.15
Fahrenheit temperature scale is a scale based on
32 for the freezing point of water and 212 for the boiling point of water,
the interval between the two being divided into 180 parts.

The 18th-century German physicist Daniel Gabriel
Fahrenheit originally took as the zero of his scale the temperature of an
equal ice-salt mixture and selected the values of 30 and 90 for the
freezing point of water and normal body temperature, respectively; these
later were revised to 32 and 96, but the final scale required an
adjustment to 98.6 for the latter value.

Celsius temperature scale
also called centigrade temperature scale, is the scale based on 0 for the
freezing point of water and 100 for the boiling point of water.
Invented in 1742 by the Swedish astronomer Anders Celsius, it is sometimes
called the centigrade scale because of the 100-degree interval between the
defined points.

The following formula can be used to convert a temperature from its
representation on the Fahrenheit ( F) scale to the Celsius (C) value: C =
5/9(F - 32). The Celsius scale is in general use wherever metric units
have become accepted, and it is used in scientific work everywhere.
Kelvin temperature scale is
the base unit of thermodynamic temperature measurement in the
International System (SI) of measurement. It is defined as 1/ 273.16 of
the triple point (equilibrium among the solid, liquid, and gaseous phases)
of pure water.

The kelvin (symbol K without the degree sign []) is also the
fundamental unit of the Kelvin scale, an absolute temperature scale named
for the British physicist William Thomson, Baron Kelvin. Such a scale
has as its zero point absolute zero, the theoretical temperature at which
the molecules of a substance have the lowest energy.

The Kelvin scale has been adopted as the international standard for
scientific temperature measurement. The Kelvin scale is related to the
Celsius scale. The difference between the freezing and boiling points
of water is 100 degrees in each, so that the Kelvin has the same magnitude
as the degree Celsius.